<script setup lang="ts">
import { createRoleUserAPI, editbianjiAPI, getRoleDetailAPI, getTreeListAPI } from '@/apis/system'
import type { RoleData, RoleParams } from '@/types/system'
import { ElMessage, type FormInstance, type FormRules } from 'element-plus'
import type { TreeInstance } from 'element-plus/lib/components/index.js'
import { computed, ref } from 'vue'
import { useRoute, useRouter } from 'vue-router'

const activeStep = ref(1)
const jia = async() => {
    try {
        if (activeStep.value === 1) {
             // 1. 校验表单
            await roleFormRef.value?.validate()
            //没有问题 进入下一步
            activeStep.value++
        } else if (activeStep.value === 2) {
            // 2. 校验表单2 - 树形节点选中
            roleForm.value.perms = [] // 先清空输入，避免 push 累加
            treeRefs.value.forEach(tree => {
            // 获取选中的节点
            const res = tree.getCheckedKeys() as number[]         
            // 追加到数组值
            roleForm.value.perms.push(res)
            })
            if (roleForm.value.perms.flat().length === 0) {
                ElMessage.error('请选择至少一条权限')
            } else {
                //选中校验没问题 进入下一步(进入表单3)
                activeStep.value++
                //进入表单3后,把选中的权限,同步到被禁用的树形组件
                diabledTreeRefs.value.forEach((tree, index) => {
                tree.setCheckedKeys(roleForm.value.perms[index])
               })
            }
        }
    } catch {

    }
}
const jian = () => {
    activeStep.value--
}
const router = useRouter()
const confirmAdd = async () => {
    await createRoleUserAPI(
        roleForm.value as RoleParams
    )
    ElMessage({
        type: 'success',
        message: '添加角色成功'
    })
    router.back()
}

// 表单数据
const roleForm = ref<RoleParams>({
    roleName: '',
    remark: '',
    perms: []
})

// 表单校验
const roleFormRef = ref<FormInstance>()
const roleRules = ref<FormRules<RoleParams>>({
    roleName: [
        { required: true, message: '请输入角色名称', trigger: 'blur' },
        { min: 2, max: 20, message: '长度在 2 到 20 个字符', trigger: 'blur' }
    ],
    remark: [
        { required: true, message: '请输入角色描述', trigger: 'blur' },
    ]
})
// 获取权限列表(所有树形)
const treeList = ref<RoleData[]>([])
const getTreeList = async () => {
    const res = await getTreeListAPI()
    treeList.value = res.data
}
getTreeList()
//可选择的树形组件(表单2)
const treeRefs = ref<TreeInstance[]>([])

//被禁用选择的树形组件(表单3)
const diabledTreeRefs = ref<TreeInstance[]>([])

const route = useRoute()

const getRoleDetail = async () => {
        const res = await getRoleDetailAPI(Number(route.params.id))
        const { roleName, remark, perms } = res.data
        roleForm.value = { roleName, remark, perms }
}
getRoleDetail()
if (route.params.id) {
    getRoleDetail()
}

// 确认添加
const onSubmit = async () => {
    // 获取角色 id
   const roleId = route.params.id
    // 有角色 id 为编辑修改，否则为添加
    if (roleId) {        
        await editbianjiAPI({
            roleId: Number(roleId),
            ...roleForm.value
        })
    } else {
        // 发送表单给后端
        await createRoleUserAPI(roleForm.value)
    }
    // 轻提示
    ElMessage.success(roleId ? '更新成功' : '添加成功')
    // 返回上一页
    router.back()
}


</script>

<template>
    <div class="add-role">
        <header class="add-header">
            <el-page-header content="添加角色" @back="$router.back()" />
            <el-page-header v-show="route.params.roleId" content="编辑角色" @back="$router.back()" />
        </header>
        <main class="add-main">
            <div class="step-container">
                <el-steps direction="vertical" :active="activeStep">
                    <el-step title="角色信息" />
                    <el-step title="权限信息" />
                    <el-step title="检查并完成" />
                </el-steps>
            </div>
            <div v-show="activeStep === 1" class="form-container">
                <div class="title">角色信息</div>
                <div class="form">
                    <el-form ref="roleFormRef" class="form-box" :model="roleForm" :rules="roleRules">
                        <el-form-item label="角色名称" prop="roleName">
                            <el-input v-model="roleForm.roleName" />
                        </el-form-item>
                        <el-form-item label="角色描述" prop="remark">
                            <el-input v-model="roleForm.remark" type="textarea" />
                        </el-form-item>
                    </el-form>
                </div>
            </div>
            <div v-show="activeStep === 2" class="form-container">
                <div class="title">权限配置</div>
                <div class="form">
                    <div class="tree-wrapper">
                        <div v-for="(item,index) in treeList" :key="item.id" class="tree-item">
                            <div class="tree-title">{{ item.title }}</div>
                            <el-tree :data="item.children" show-checkbox default-expand-all node-key="id"
                                :props="{ label: 'title' }" ref="treeRefs"
                                :default-checked-keys="roleForm.perms[index]" />
                        </div>
                    </div>
                </div>
            </div>
            <div v-show="activeStep === 3" class="form-container">
                <div class="title">检查并完成</div>
                <div class="form">
                    <div class="info">
                        <div class="form-item">角色名称：{{ roleForm.roleName }}</div>
                        <div class="form-item">角色描述：{{ roleForm.remark }}</div>
                        <div class="form-item">角色权限：</div>
                        <div class="tree-wrapper">
                            <div v-for="(item, index) in treeList" :key="item.id" class="tree-item">
                                <div class="tree-title">{{ item.title }}</div>
                                <el-tree :data="item.children" show-checkbox default-expand-all node-key="id"
                                    :props="{ label: 'title', disabled: () => true }" ref="diabledTreeRefs" />
                            </div>
                        </div>
                    </div>
                </div>
            </div>
        </main>
        <footer class="add-footer">
            <div class="btn-container">
                <el-button v-if="activeStep >1" @click="jian">上一步</el-button>
                <el-button v-if="activeStep < 3" @click="jia" type="primary">下一步</el-button>
                <el-button v-if="activeStep === 3" @click="onSubmit" type="primary">确认添加</el-button>
                {{ $route.params.id ? '确认更新' : '确认添加' }}
            </div>
        </footer>
    </div>
</template>


<style scoped lang="scss">
.add-role {
    background-color: #f4f6f8;
    height: 100vh;

    .add-header {
        display: flex;
        justify-content: space-between;
        align-items: center;
        padding: 0 20px;
        height: 64px;
        line-height: 64px;
        font-size: 16px;
        font-weight: bold;
        background-color: #fff;

        .left {
            span {
                margin-right: 4px;
            }

            .arrow {
                cursor: pointer;
            }
        }

        .right {
            text-align: right;
        }
    }

    .add-main {
        position: fixed;
        top: 64px;
        bottom: 88px;
        width: 100%;
        overflow-y: auto;
        background: #f4f6f8;
        padding: 20px 30px;
        display: flex;

        .step-container {
            height: 400px;
            width: 200px;
        }

        .form-container {
            flex: 1;
            background-color: #fff;
            overflow-y: auto;

            .title {
                height: 60px;
                line-height: 60px;
                padding-left: 20px;
            }

            .form {
                margin-bottom: 20px;
                padding: 20px 65px 24px;

                .el-form {
                    display: flex;
                    flex-wrap: wrap;
                }

                .info {
                    font-size: 14px;
                    color: #666;

                    .form-item {
                        margin-bottom: 20px;
                    }
                }
            }

            .form-box {
                width: 600px;
                display: flex;
                flex-direction: column;
            }
        }
    }

    .add-footer {
        position: fixed;
        bottom: 0;
        width: 100%;
        padding: 24px 50px;
        color: #000000d9;
        font-size: 14px;
        background: #fff;
        text-align: center;
        z-index: 10001;
    }

    .tree-wrapper {
        display: flex;
        justify-content: space-between;
        flex-wrap: wrap;

        .tree-item {
            flex: 1;
            padding: 0px 4px;
            text-align: center;

            .tree-title {
                background: #f5f7fa;
                text-align: center;
                padding: 10px 0;
                margin-bottom: 12px;
            }
        }
    }
}
</style>